Electric tramway, railway, and like system



Aug. 4, 1931. u. KLoss ET AL ELECTRIC) TRAMWAY, RAILWAY, AND LIKE SYSTEMl Filed Oct. 23. 1950 2 Sheets-Sheet 1 l fq/adw Aug. 4,-1931. u. KLoss ET AL ELECTRIC TRAMwAY, RAILWAY, AND LIKE SYSTEM Filed Oct. 25, 1930 2 Sheets-Sheet 2 IN VEN TORS U. zlasg/l. Peters lruger .BYZWMW ATTORNEYS.

Patented Aug. 4, 1931 irs STTS ULRICH KLOSS, ALBERT PETES, AND

KURT KRGER, Fl BERLH, GERMANY Application filed October 23, 1930, Serial No The present invention relates to electric railways, tramways and other electrically propelled rail vehicles, and more particularly to a method of electrically connecting or dis- U connecting from a remote point sections of A the track.

For this purpose it has already been proenergy is also cut ott which is utilized 'for generating the electric waves.

lt is the primary object of the present invention to eliminate the drawback referred to, and this is accomplished by locating the source of energy employed f'orgenerating the electric waves on the car or vehicle itself, so that the same is wholly independent of the rail or line current as the case may be.

Other objects and advantages of the invention will become apparent as the descrip-V tion proceeds. Y

The invention will now be described more fully with reference to the accompanying drawings, which serves for the diagrammatical representation thereof.

Fig. l is a circuit diagram for the transmitter provided on the vehicle.

Fig. 2 is the circuit diagram in respect of the receiver located at the sub-station.

rlhe transmitter designated generally at A carried 0n the car 21 comprises a transmitter tube l, the usual oscillatory circuit coil 2 and the coupling coil 3, which is connected on the one hand with the interposition of a block condenser 4L to the co-nductor line trolley wire 5, and on the other hand, through the medium of the line 6, with earth 7, as, in this case with the rail 2O through the car Wheels and axle. 8 is a tuning condenser serving to complete the adjustable oscilla- 490,736, Vand in Germany September 3,V 1929.

tory circuit, while 9is the usual'` high ohmic 1 resistance and l() the cliokefcoils. 'll is a regulating resistanceconnectedto 'the' heating battery l2, the anode battery'being designatedby V13." The oscillatory circuit coilcommunicates' in the usual `manner with a tapping line '14, and across the cathode line there is lalso connected an additional block* condenser l5. In' lieuv of''the'tube transmit# ter as described above it is also 'possible` to employ a high frequency generator inj order to be able to transmit-to the sub-stations. through the'mediumV ofthe' trolley wire f5 01"v railZO waves of desired length. i

Referring to Fig. 2,' -therecciving apparatus designated at B is connected, with the'v coupling coil 3a, to the rail 2O throughv theVV medium of the line 6a, while the'second terminal of the coupling coil vis connected' through the medium of the block lcondenser ta', with the conductorline or trolley'wire 5. The oscillatory circuit coil is'designated 2a, while ,8a is a tuning condenser. The detector tube la is,1with the use of a heating battery, an anode battery and. alsofa special grid battery 16, connected in the usual manner acrossthe Yoscillatory circuit. ln the output circuit-17 of this receiver there is located a relay l8,w;hich acts-upon the Vcircuit to disconnect an oilswitclr as will be hereinafter'more fully described. The input or output circuit may naturally beprovided with one or more amplifying tubes in order to ensurev proper response on'the part ofthe relay." n

The current yfor operating the driving motor Q2 ofthe car 21 is supplied, on the one hand, by the railQO and, on the other hand, Aby the trolley wire 5 which, as shown in Fig. 3, is divided intoY two sections a and 5?). Feed lines 22 and Q3 are` connected with the sections'a and 5b throughfcontrol switches Q4 and 25. Within the car 2l is positioned the transmitter A. illustrated in detailjin Fig. l which, with the car in the position shown in Fig. 3, is .connected with the section 5a by the usual shoe 26 through the condenser t. The transmitter A is also connected to the track rail 2O by the conductor 6 and the car wheel and axle. Ite- SO'y ceivers B and B constructed in accordance with the one illustrated in detail 'in Fig. 2 are located in the substation and are connected, on the one hand, with the trolley wire 5a and on the other with the track rail 20. The two receivers, however, are tuned t0 different frequencies and they operate, respectively, relays 29 and 30` which are connected with and operate to open and close the switch 24 of the feed conductor 22.

Thus, when the receiver B is Operated by transmission of high frequency energy of the proper characteristic from the Vtransmitw ter A, the relay 29 is operated to open the switch 24 whereas, when the receiver B is operated by high frequency energy of proper characteristic transmitted by the transmitter A, the relay 30 is caused to close the switch.

In this manner the two receivers B and B may be selectively operated from the transmitterA carried on the electric car 2l. When the car 21 passes from the trolley section 5a to the section 5b the connection of the latter section with the feed conductor 23 is controlled by two receivers identical with those labove described.

It will be understood that no restriction is made to the specific form of embodiment described with reference to the drawing, and that various modifications are quite possible without departing from the spirit of the invention.

That we claim as new and desire to secure by Letters Patent is:

l. In an electric railway, power circuit conductors, adapted to supply electric energy for the operation of electric cars, means for transmitting currents of different characteristics over said conductors, a plurality of selective means operated in response to the transmission of currents of different characteristics for controlling the supply 0f energy to the power circuit conductors.

2. In an .electric railway, power circuit .conductors adapted to supply electric energy for the operation of electric cars, means for transmitting currents of different characteristics over said conductors, a plurality of selective means operated in response to the transmission of currents of diHerent characteristics for controlling the power circuit conductors, one of said selective means operating to open the power circuit conductors to interrupt operation of electric cars and the other selective means operating to close the power circuit conductors and permit nor.- mal operation of said cars.

In testimony whereof we have affixed our signatures.

ULRICH KLOSS. ALBERT PETERS.

KURT KRGER. 

